6545407673488 has 20 divisors (see below), whose sum is σ = 12681767882988. Its totient is φ = 3272693381120.

The previous prime is 6545407673449. The next prime is 6545407673489. The reversal of 6545407673488 is 8843767045456.

It can be written as a sum of positive squares in 2 ways, for example, as 5371418087424 + 1173989586064 = 2317632^2 + 1083508^2 .

It is a super-2 number, since 2×6545407673488² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6545407673489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7918620 + ... + 8706052.

Almost surely, 2^{6545407673488} is an apocalyptic number.

It is an amenable number.

6545407673488 is a deficient number, since it is larger than the sum of its proper divisors (6136360209500).

6545407673488 is a wasteful number, since it uses less digits than its factorization.

6545407673488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306962 (or 1306956 counting only the distinct ones).

The product of its (nonzero) digits is 541900800, while the sum is 67.

The spelling of 6545407673488 in words is "six trillion, five hundred forty-five billion, four hundred seven million, six hundred seventy-three thousand, four hundred eighty-eight".